Over the last three decades, Arakawa (Shusaku Arakawa, b. 1936) and Madeline Gins (b. 1941) have created a remarkable body of work that bridges disciplines and seeks to expand the definition of artistic practice. This volume, published on the occasion of a major exhibition at the Guggenheim Museum SoHo, features two important collaborations, The Mechanism of Meaning, 1963-73, 1996, and their "reversible destiny" architecture projects, begun in 1971.